A concrete elastic modulus measuring instrument

Abstract

The utility model relates to concrete modulus measuring instrument technical field, specifically is a kind of concrete elastic modulus measuring instrument, including two groups of fixed mechanism and its installation between two groups of fixed mechanism upper ring, lower ring, and a plurality of screw two are installed on the upper ring and lower ring, measuring mechanism is installed between lower ring and upper ring, support mechanism is installed on lower ring, support mechanism includes two rotating grooves, two rotating grooves are set on lower ring, two fixed pieces are oppositely arranged at two rotating grooves, two fixed pieces and lower ring are welded between, two fixed pieces of same side are rotatably connected with shaft, support frame is fixedly connected between opposite two shafts, clamping column is slidably connected on two support frames, spring is clamped between clamping column and support frame, clamping column and the side wall of lower ring abut, the support force of lower ring is increased by installing support mechanism on lower ring, and upper ring and micrometer are conveniently installed.

Description

Technical Field

[0001] This utility model relates to a measuring instrument, specifically a concrete elastic modulus measuring instrument, belonging to the technical field of concrete modulus measuring instruments. Background Technology

[0002] The concrete elastic modulus measuring instrument is a specialized device used to determine the stress-strain ratio of concrete materials within the elastic range. Its structure consists of an upper ring, a lower ring, a dial indicator, a set screw, and a specimen positioning device. It is available in two types: round and square, and is compatible with standard specimen sizes such as φ150×300mm and 150×150×300mm.

[0003] In existing technologies, when measuring specimens using a concrete elastic modulus measuring instrument, the upper and lower rings must first be placed on a flat surface. The set screws of the specimen are then unscrewed, and the upper and lower rings are fixed with a fixing plate. After installing the dial indicator, the fixing plate is removed to complete the specimen positioning. The measuring instrument, along with the specimen, is then placed at the center of the lower pressure plate of the compression testing machine, ensuring that the specimen axis is aligned with the center of the lower pressure plate. The dial indicator is then zeroed, and the machine is allowed to apply force. However, when installing the upper and lower rings, the lower ring is only fixed with two fixing plates, resulting in fewer support points and potentially uneven stress. Furthermore, the lower ring needs to be supported when assembling the upper ring and the dial indicator, making the installation of the upper and lower rings and the dial indicator inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a concrete elastic modulus measuring instrument to solve the above problems. By installing a support mechanism on the lower ring, the support force of the lower ring is increased, which facilitates the installation of the upper ring and the dial indicator.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a concrete elastic modulus measuring instrument, comprising two sets of fixing mechanisms and an upper ring and a lower ring installed between the two sets of fixing mechanisms. Multiple screws are installed on both the upper and lower rings. A measuring mechanism is installed between the lower and upper rings. A support mechanism is installed on the lower ring. The support mechanism includes two rotating grooves. Two rotating grooves are formed on the lower ring. Two fixing plates are provided opposite to each of the two rotating grooves. The two sets of fixing plates are welded to the lower ring. A rotating shaft is rotatably connected to each of the two fixing plates on the same side. A support frame is fixedly connected between the two opposing rotating shafts. A locking post is slidably connected to each of the two support frames. A spring is held between the locking post and the support frame. The locking post abuts against the side wall of the lower ring.

[0006] Preferably, the depth of the rotating groove is less than half the thickness of the lower ring, and the two rotating grooves are arranged opposite to each other.

[0007] Preferably, the support frame has an inverted T-shaped structure and is hollowed out.

[0008] Preferably, the width of the locking post is equal to the width of the support frame, and the end of the locking post has an arc-shaped structure.

[0009] Preferably, the fixing mechanism includes two fixing plates, with two fixing plates attached to each other on the upper and lower rings. A plug is welded to the opposite side of each of the two fixing plates, and the plug is inserted into the hole in the side wall of the upper ring. A screw is threadedly connected to each of the two fixing plates, and the two screws are threadedly connected to the lower ring.

[0010] Preferably, the cross-sections of the two fixing plates are arc-shaped and L-shaped, and the two fixing plates are arranged in a cross shape with the two support frames.

[0011] Preferably, the measuring mechanism includes three screws, two screws are inserted into the upper ring, the bottom of each screw is threadedly connected to a fixing bracket that abuts against the bottom of the upper ring, a dial indicator is inserted into each of the two fixing brackets, and a screw four is threadedly connected to each of the two fixing brackets that abuts against the dial indicator. Two copper plates are fixedly connected to the lower ring, and the bottom of each of the two dial indicators abuts against the surfaces of the two copper plates respectively.

[0012] Preferably, the fixing frame has a U-shaped structure, and the height of the fixing frame is less than the height of the fixing plate.

[0013] Preferably, a horizontal bubble level is installed on both the upper and lower rings, and the horizontal bubble level is located above the screw and the insert rod.

[0014] The beneficial effects of this utility model are as follows: When assembling, hold the lower ring. At this time, the locking pins on the two support frames abut against the outer wall of the lower ring. Pulling the locking pins on the two support frames in opposite directions compresses the spring. Furthermore, after the two locking pins separate from the lower ring, the two support frames can be rotated downwards. At this time, the support frames rotate around the pivot. When the two support frames are parallel, release the two locking pins. At this time, the spring opens, and the two locking pins move towards the bottom of the lower ring, thus limiting the support frames. At this time, the two support frames are equivalent to temporary support components supporting the lower ring. Then, fix the two fixing plates to the lower ring with screws. At this time, the two support frames and the two fixing plates form a cross-shaped structure and simultaneously support the lower ring. No hand support is required, which facilitates the assembly of other parts. After the assembly is completed, reverse the support frames and store them in the side wall of the lower ring through the locking pins and springs, which can avoid affecting the measurement of the specimen. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2This is a schematic diagram of the connection structure of the fixing plate and the insertion rod of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure of the support frame, spring, and locking pin of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure of the fixing plate and support frame of this utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure of the fixed disk, rotating shaft and locking pin of this utility model.

[0020] In the diagram: 1. Lower ring; 2. Upper ring; 3. Fixing mechanism; 301. Fixing plate; 302. Screw 1; 303. Insert rod; 4. Screw 2; 5. Horizontal bubble meter; 6. Measuring mechanism; 601. Screw 3; 602. Fixing frame; 603. Dial indicator; 604. Screw 4; 605. Copper sheet; 7. Support mechanism; 701. Rotating groove; 702. Support frame; 703. Clamping post; 704. Spring; 705. Fixing plate; 706. Rotating shaft. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 As shown, a concrete elastic modulus measuring instrument includes two sets of fixing mechanisms 3 and an upper ring 2 and a lower ring 1 installed between the two sets of fixing mechanisms 3. Multiple screws 4 are installed on both the upper ring 2 and the lower ring 1. A measuring mechanism 6 is installed between the lower ring 1 and the upper ring 2. A support mechanism 7 is installed on the lower ring 1. The support mechanism 7 includes two rotating grooves 701. Two rotating grooves 701 are opened on the lower ring 1. Two fixing pieces 705 are provided opposite to each of the two rotating grooves 701. The two sets of fixing pieces 705 are welded to the lower ring 1. A rotating shaft 706 is rotatably connected to each of the two fixing pieces 705 on the same side. A support frame 702 is fixedly connected between the two opposite rotating shafts 706. A locking post 703 is slidably connected to each of the two support frames 702. A spring 704 is clamped between the locking post 703 and the support frame 702. The locking post 703 abuts against the side wall of the lower ring 1.

[0023] As a technical optimization of this utility model, the depth of the rotating groove 701 is less than half the thickness of the lower ring 1, and the two rotating grooves 701 are arranged opposite to each other, which increases the stability of the lower ring 1 structure.

[0024] As a technical optimization of this utility model, the support frame 702 has an inverted T-shaped structure and is hollowed out, which reduces the weight of the support frame 702 and makes it easier to store during testing.

[0025] As a technical optimization of this utility model, the width of the locking post 703 is equal to the width of the support frame 702, and the end of the locking post 703 has an arc-shaped structure, which makes it easy for the locking post 703 to fit and abut against the side wall of the lower ring 1 when the support frame 702 is stored.

[0026] As a technical optimization of this utility model, the fixing mechanism 3 includes two fixing plates 301. The upper ring 2 and the lower ring 1 are respectively attached to the two fixing plates 301. The opposite sides of the two fixing plates 301 are welded with insert rods 303. The insert rods 303 are inserted into the holes in the side wall of the upper ring 2. The two fixing plates 301 are threaded with screws 302. The two screws 302 are threadedly connected to the lower ring 1 to support the lower ring 1 and the upper ring 2 during installation.

[0027] As a technical optimization of this utility model, the cross-sections of the two fixing plates 301 are arc-shaped and L-shaped, and the two fixing plates 301 and the two support frames 702 are arranged in a cross shape, which increases the stability of the lower ring 1 support.

[0028] As a technical optimization of this utility model, the measuring mechanism 6 includes screws 601, two screws 601 are inserted into the upper ring 2, and the bottom of each screw 601 is threadedly connected to a fixing bracket 602 that abuts against the bottom of the upper ring 2. A dial indicator 603 is inserted into each fixing bracket 602, and screws 604 that abut against the dial indicator 603 are threadedly connected to each fixing bracket 602. Two copper plates 605 are fixedly connected to the lower ring 1, and the bottom of the two dial indicators 603 abuts against the surfaces of the two copper plates 605 respectively. The fixing bracket 602 has a U-shaped structure, and the height of the fixing bracket 602 is less than the height of the fixing plate 301, so as to realize the measurement of the elastic modulus when the test block is pressed by the press.

[0029] As a technical optimization of this utility model, a horizontal bubble meter 5 is installed on both the upper ring 2 and the lower ring 1. The horizontal bubble meter 5 is located above the screw 302 and the plug rod 303, so that the upper ring 2 and the lower ring 1 are kept horizontal during installation.

[0030] In use, a standard concrete test block is placed on a flat surface, and the measuring instrument is assembled next to it. During assembly, the lower ring 1 is held, at which point the locking posts 703 on the two support frames 702 abut against the outer wall of the lower ring 1. Pulling the locking posts 703 on the two support frames 702 in opposite directions compresses the spring 704. Further, after the two locking posts 703 separate from the lower ring 1, the two support frames 702 can be rotated downwards. At this time, the support frames 702 rotate around the pivot 706. When the two support frames 702 are parallel... Release the two locking pins 703. At this time, the spring 704 opens, and the two locking pins 703 move further towards the bottom of the lower ring 1, thus limiting the support frame 702. At this time, the two support frames 702 act as temporary support components to support the lower ring 1. Then, fix the two fixing plates 301 to the lower ring 1 with screws 302. At this time, the two support frames 702 and the two fixing plates 301 form a cross-shaped structure and simultaneously support the lower ring 1. No manual support is required, which facilitates the assembly of other parts. Then, snap the upper ring 2 into the two fixing plates 302. Between 01 and 02, and with the two holes on the side wall of the upper ring 2 fitted onto the outside of the two insert rods 303, the installation of the upper ring 2 is completed. The level of the upper ring 2 and lower ring 1 can be observed by using two level bubble level 5s. Finally, the two fixing brackets 602 are installed onto the upper ring 2 with screws 601, and the two dial indicators 603 are inserted into the fixing brackets 602 and fixed with screws 604, ensuring the bottom of the dial indicator 603 abuts against the copper plate 605 on the lower ring 1. After confirming that the upper and lower rings 2 are level, the test block is placed on the upper ring. Between ring 2 and lower ring 1, simultaneously rotate two sets of opposing screws 4 to fix and clamp the test block. Remove the fixing plate 301, press down the two locking posts 703, and rotate the two support frames 702 in the opposite direction to separate them from the table. When the two support frames 702 are horizontal with the table, release the locking posts 703. The spring 704 returns to its original position, so that the locking posts 703 abut against the lower ring 1, thereby limiting the support frame 702. Complete the storage of the support frame 702, start the press to squeeze the test block, observe the data of the dial indicator 603, and complete the measurement of the test piece modulus.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A concrete elastic modulus measuring instrument, comprising two sets of fixing mechanisms (3) and an upper ring (2) and a lower ring (1) installed between the two sets of fixing mechanisms (3), characterized in that: Multiple screws (4) are installed on both the upper ring (2) and the lower ring (1). A measuring mechanism (6) is installed between the lower ring (1) and the upper ring (2). A support mechanism (7) is installed on the lower ring (1). The support mechanism (7) includes two rotating grooves (701). Two rotating grooves (701) are opened on the lower ring (1). Two fixing pieces (705) are provided opposite to each of the two rotating grooves (701). The two sets of fixing pieces (705) 05) Welded to the lower ring (1), two fixed plates (705) on the same side are rotatably connected to a rotating shaft (706), and a support frame (702) is fixedly connected between the two opposite rotating shafts (706). A locking post (703) is slidably connected to the two support frames (702). A holding spring (704) is clamped between the locking post (703) and the support frame (702). The locking post (703) abuts against the side wall of the lower ring (1).

2. The concrete elastic modulus measuring instrument according to claim 1, characterized in that: The depth of the rotating groove (701) is less than half the thickness of the lower ring (1), and the two rotating grooves (701) are arranged opposite to each other.

3. The concrete elastic modulus measuring instrument according to claim 1, characterized in that: The support frame (702) has an inverted T-shaped structure and is hollowed out.

4. The concrete elastic modulus measuring instrument according to claim 1, characterized in that: The width of the locking post (703) is equal to the width of the support frame (702), and the end of the locking post (703) has an arc-shaped structure.

5. A concrete elastic modulus measuring instrument according to claim 1, characterized in that: The fixing mechanism (3) includes two fixing plates (301). The upper ring (2) and the lower ring (1) are fitted with two fixing plates (301) respectively. The two fixing plates (301) are welded with insert rods (303) on opposite sides. The insert rods (303) are inserted into the holes in the side wall of the upper ring (2). The two fixing plates (301) are threaded with screws (302). The two screws (302) are threadedly connected to the lower ring (1).

6. A concrete elastic modulus measuring instrument according to claim 5, characterized in that: The two fixing plates (301) have an arc-shaped cross section and an L-shaped cross section, and the two fixing plates (301) are arranged in a cross shape with the two support frames (702).

7. A concrete elastic modulus measuring instrument according to claim 6, characterized in that: The measuring mechanism (6) includes screw three (601), two screw three (601) are inserted into the upper ring (2) respectively, and the bottom of the two screw three (601) is threadedly connected to a fixing bracket (602) that abuts against the bottom of the upper ring (2). A dial indicator (603) is inserted into the two fixing brackets (602), and screw four (604) that abuts against the dial indicator (603) is threadedly connected to the two fixing brackets (602). Two copper plates (605) are fixedly connected to the lower ring (1), and the bottom of the two dial indicators (603) abuts against the surfaces of the two copper plates (605) respectively.

8. A concrete elastic modulus measuring instrument according to claim 7, characterized in that: The fixing frame (602) has a U-shaped structure, and the height of the fixing frame (602) is less than the height of the fixing plate (301).

9. A concrete elastic modulus measuring instrument according to claim 5, characterized in that: A horizontal bubble meter (5) is installed on both the upper ring (2) and the lower ring (1), and the horizontal bubble meter (5) is located above the screw (302) and the plug (303).

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